package vBulletin
{
    class Security
    {
        var hexcase = 0;  
        var b64pad  = ""; 
        var chrsz   = 8;  

        function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
        function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}
        function str_md5(s){ return binl2str(core_md5(str2binl(s), s.length * chrsz));}
        function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }
        function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }
        function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data)); }

        function core_md5(x, len)
        {
          x[len >> 5] |= 0x80 << ((len) % 32);
          x[(((len + 64) >>> 9) << 4) + 14] = len;

          var a =  1732584193;
          var b = -271733879;
          var c = -1732584194;
          var d =  271733878;

          for(var i = 0; i < x.length; i += 16)
          {
            var olda = a;
            var oldb = b;
            var oldc = c;
            var oldd = d;

            a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
            d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
            c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);
            b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
            a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
            d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);
            c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
            b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
            a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
            d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
            c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
            b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
            a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);
            d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
            c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
            b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329);

            a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
            d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
            c = md5_gg(c, d, a, b, x[i+11], 14,  643717713);
            b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
            a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
            d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);
            c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
            b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
            a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
            d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
            c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
            b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);
            a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
            d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
            c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);
            b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

            a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
            d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
            c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562);
            b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
            a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
            d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);
            c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
            b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
            a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);
            d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
            c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
            b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);
            a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
            d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
            c = md5_hh(c, d, a, b, x[i+15], 16,  530742520);
            b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);

            a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
            d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);
            c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
            b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
            a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);
            d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
            c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
            b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
            a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
            d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
            c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
            b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649);
            a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
            d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
            c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);
            b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);

            a = safe_add(a, olda);
            b = safe_add(b, oldb);
            c = safe_add(c, oldc);
            d = safe_add(d, oldd);
          }
          return Array(a, b, c, d);

        }

        function md5_cmn(q, a, b, x, s, t)
        {
          return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
        }
        function md5_ff(a, b, c, d, x, s, t)
        {
          return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
        }
        function md5_gg(a, b, c, d, x, s, t)
        {
          return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
        }
        function md5_hh(a, b, c, d, x, s, t)
        {
          return md5_cmn(b ^ c ^ d, a, b, x, s, t);
        }
        function md5_ii(a, b, c, d, x, s, t)
        {
          return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
        }

        function core_hmac_md5(key, data)
        {
          var bkey = str2binl(key);
          if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);

          var ipad = Array(16), opad = Array(16);
          for(var i = 0; i < 16; i++)
          {
            ipad[i] = bkey[i] ^ 0x36363636;
            opad[i] = bkey[i] ^ 0x5C5C5C5C;
          }

          var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
          return core_md5(opad.concat(hash), 512 + 128);
        }

        function safe_add(x, y)
        {
          var lsw = (x & 0xFFFF) + (y & 0xFFFF);
          var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
          return (msw << 16) | (lsw & 0xFFFF);
        }

        function bit_rol(num, cnt)
        {
          return (num << cnt) | (num >>> (32 - cnt));
        }

        function str2binl(str)
        {
          var bin = new Array();
          var mask = (1 << chrsz) - 1;
          for(var i = 0; i < str.length * chrsz; i += chrsz)
            bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
          return bin;
        }

        function binl2str(bin)
        {
          var str = "";
          var mask = (1 << chrsz) - 1;
          for(var i = 0; i < bin.length * 32; i += chrsz)
            str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask);
          return str;
        }

        function binl2hex(binarray)
        {
          var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
          var str = "";
          for(var i = 0; i < binarray.length * 4; i++)
          {
            str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
                   hex_tab.charAt((binarray[i>>2] >> ((i%4)*8  )) & 0xF);
          }
          return str;
        }

        function binl2b64(binarray)
        {
          var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
          var str = "";
          for(var i = 0; i < binarray.length * 4; i += 3)
          {
            var triplet = (((binarray[i   >> 2] >> 8 * ( i   %4)) & 0xFF) << 16) | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 ) | ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
            for(var j = 0; j < 4; j++)
            {
              if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
              else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
            }
          }
          return str;
        }

        function str_to_ent(str)
        {
	        var result = '';
	        var i;

	        for (i = 0; i < str.length; i++)
	        {
		        var c = str.charCodeAt(i);
		        var tmp = '';

		        if (c > 255)
		        {

			        while (c >= 1)
			        {
				        tmp = "0123456789" . charAt(c % 10) + tmp;
				        c = c / 10;
			        }

			        if (tmp == '')
			        {
				        tmp = "0";
			        }
			        tmp = "#" + tmp;
			        tmp = "&" + tmp;
			        tmp = tmp + ";";

			        result += tmp;
		        }
		        else
		        {
			        result += str.charAt(i);
		        }
	        }
	        return result;
        }

        function trim(s)
        {
	        while (s.substring(0, 1) == ' ')
	        {
		        s = s.substring(1, s.length);
	        }
	        while (s.substring(s.length-1, s.length) == ' ')
	        {
		        s = s.substring(0, s.length-1);
	        }
	        return s;
        }

        function md5hash(input)
        {
	        return hex_md5(str_to_ent(input)) + '|' + hex_md5(trim(input));
        }
    }
}